Mack E-TECH SB-210-034 User manual
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ERRATA SHEET — ENGINE
Crankshaft Center Main Bearing
Specification Update
Effective January 2006, Mack Powertrain Engineering has
widened the crankshaft center main bearing runout
specification. The maximum allowable crankshaft runout
specification was changed from 0.005 in. (0.127 mm) to
0.007 in. (0.178 mm). The manuals listed below are affected
by this change.
Reference: Engine Manuals
5-101 E7
5-106 E-Tech™
5-107 E7G
5-110 ASET™ AI/AMI
5-111 ASET™ AC
JANUARY 2006 © MACK TRUCKS, INC. 2006
(NEW ISSUE) MACK ENGINE SERIES
10_125erb.fm Page 2 Tuesday, April 18, 2006 11:43 AM
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SB-210-034 — Page 1 of 1 2002.CNI,SKCURTKCAM©50181AP,NWOTNELLA,SNOITACILBUPECIVRES
SERVICE BULLETIN
NUMBER: SB-210-034
DATE: 5/14/02
MODEL: E-Tech™
(Also applies to Mack Trucks Australia)
MISCELLANEOUS FASTENER CHANGES — E-TECH™ ENGINES
The following fastener changes were made on E-Tech™ engines:
Injection Nozzle Hold-Down Screws — Beginning 3/00, the injection nozzle hold-
down screws having the 15 mm external hex head have been changed to a new screw
(part No. 421GC2116M) that has a 16 mm internal hex head.
Rocker Shaft Mounting Bracket Bolts — Beginning 4/00, the bolts and washers
used to secure the rocker shaft mounting brackets to the cylinder head have been
changed to a flange-head bolt (part No. 65AM5010). Tightening torque value for this
new fastener remains the same at 40 lb-ft (50 N•m).
Air Compressor Mounting Screw — Beginning 8/00, the original hex-head screw has
been changed to a flange-head screw (part No. 27AM16). This change was made so
that the mounting screw clamp load is distributed over a wider area of the flat washer.
Camshaft Thrust Washer — Beginning 10/00, the two screws and washers used to
secure the camshaft thrust washer to the block were changed to a flange-head screw
(part No. 66AM44). Tightening torque value for this fastener remains the same at 15 lb-
ft (20 N•m).
Cylinder Head Capscrews — Beginning 6/01, the cylinder head capscrews and the
separate hardened flat washer were replaced in production with capscrews having
captured washers (part number series 400GC317M). This change was implemented to
prevent the possibility of omitting or installing more than one washer during assembly.
Additionally, the outside diameter of the captured washer was reduced slightly
(approximately 0.030″) to accommodate the redesigned cylinder head cover that was
phased into production 7/01. Cylinder head capscrew torque remains the same at 205
lb-ft (278 N•m).
Flywheel-to-crankshaft mounting bolts — Beginning 9/01, bolts having captured
washers (part Nos. 419GC31M and 419GC31M2) were released into production to
replace the previously used bolts and separate hardened flat washer used to secure
the flywheel to the crankshaft. Flywheel-to-crankshaft mounting bolt torque remains the
same at 185 lb-ft (250 N•m).
Electronic Unit Pump (EUP) hold-down screws — Beginning 11/01, new hold-down
screws (part No. 421GC2123M) were released into production for the electronic unit
pumps. These screws are dimensionally the same as the previously used screws, but
conform to a more stringent specification that controls minor surface forming defects to
a greater degree than for common fasteners.Torque of the EUP hold-down bolts has
been changed from 42 lb-ft (57 N·m) to 60 lb-ft (81 N·m).
Turbocharger Mounting Nuts — Beginning 5/02, new turbocharger mounting nuts
were released into production. These nuts (part No. 142GC247M) are composed of
silver-plated stainless steel to provide greater resistance to heat than the previous nuts.
Additionally, these nuts have the Spiralock™ self-locking thread feature to prevent
loosening in service.
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E-TECH™ENGINE
SERVICE MANUAL
(Includes Left-Side Redesign)
MAY 2006 REPRINTED 2.5M
SEPTEMBER 2004 REPRINTED 2.5M
APRIL 2003 REPRINTED 2.5M
JUNE 2002 REPRINTED 2.5M
OCTOBER 2001 REPRINTED 2.5M
OCTOBER 2000
(REVISED – SUPERSEDED ISSUE JULY 1999)
© MACK TRUCKS, INC. 2000
5-106
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ii
ATTENTION
The information in this manual is not all inclusive and
cannot take into account all unique situations. Note that
some illustrations are typical and may not reflect the
exact arrangement of every component installed on a
specific chassis.
The information, specifications, and illustrations in this
publication are based on information that was current at
the time of publication.
No part of this publication may be reproduced, stored in a
retrieval system, or be transmitted in any form by any
means including electronic, mechanical, photocopying,
recording, or otherwise without prior written permission
of Mack Trucks, Inc.
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iv
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Advisory Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Procedures and Tool Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
EXPLANATION OF NUMERICAL CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Changes from the Existing E-Tech™ Service Procedures Manual . . . . . . . . . . . . . . . . . . . . . . . 6
ABOUT THE E-TECH™ ENGINE AND ITS SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ENGINE MODEL IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Engine Information Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Engine Serial Number Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
DESCRIPTION & OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
E-TECH™ ENGINE DESIGN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Electronic Unit Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
V-MAC III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Belt Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
J-Tech™ Engine Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Valve Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Low-Pressure Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Fuel Filtration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
High-Pressure Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
High-Pressure Fuel Injection Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Fuel Injector Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Block Heater for Front (Water Pump) Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Cylinder Head Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Gear Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Air Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Power Steering Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Vibration Damper Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Centri-Max® Oil Filter Breather Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
GLOSSARY OF TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
ENGINE SYMPTOM DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
V-MAC III Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
CAMSHAFT TIMING AND LOBE LIFT CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Camshaft Timing Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Camshaft Lobe Lift Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
CHASSIS-MOUNTED CHARGE AIR COOLING TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Special Tool Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
CMCAC Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..67
CMCAC Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Restriction Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
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TABLE OF CONTENTS
v
Core Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
CMCAC Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
CYLINDER HEAD AND CYLINDER BLOCK LEAK TEST PROCEDURE . . . . . . . . . . . . . . . . . . .71
Cylinder Head and Head Gasket Check — In Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Cylinder Head Fuel Passages Leak Check — In Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Cylinder Block/Cylinder Head Coolant Passages Leak Check — In Chassis . . . . . . . . . . . . . .72
Cylinder Head Oil Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Cylinder Head Coolant Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . .75
Cylinder Block Coolant Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . .76
ENGINE BRAKE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Operational Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Electrical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .79
Hydraulic/Mechanical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
BELT DRIVE SYSTEM TENSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Manually Tensioned System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Automatically Tensioned System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
FILTER ELEMENT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Crankcase Breather Filter Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Oil Filter Element Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Fuel Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Coolant Conditioner Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
REPAIR INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
ENGINE REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Removal from Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
ENGINE DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Filter Element Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Oil Cooler and Oil Filter Mounting Bracket Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . .101
Mounting Engine in Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..103
Alternator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Engine Electronic Control Unit (EECU) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Fuel Filter Adapter Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Coolant Conditioner Element Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Oil Cooler-to-Water Pump Inlet Line Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Thermostat Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Coolant Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Air Inlet Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Water Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Turbocharger Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Fuel Nozzle Inlet Tube Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Exhaust Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Engine Wiring Harness Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Engine Electronic Control Unit (EECU) and Cooling Plate Removal . . . . . . . . . . . . . . . . . . . .115
Electronic Unit Pump (EUP) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Oil Fill Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
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Air Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Valve Cover and Spacer Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Rocker Arm, Valve Yoke and Push Rod Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Nozzle Holder Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Cylinder Head Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Vibration Damper and Crankshaft Hub Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Oil Pan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Oil Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Front Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Auxiliary Shaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Camshaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Piston and Connecting Rod Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Flywheel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Flywheel Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Main Bearing Cap Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Crankshaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
CYLINDER BLOCK RECONDITIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Special Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Piston Cooling Spray Nozzle Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Cylinder Sleeve Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
Cylinder Sleeve Counterbore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Cup Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Pipe Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
H-Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
Camshaft Bushing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Auxiliary Shaft Bushing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Cylinder Sleeve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
Piston Cooling Spray Nozzle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
Cylinder Block Dowel Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
CRANKSHAFT AND FLYWHEEL BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
Crankshaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
Crankshaft Dowel Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Crankshaft Gear Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163
Crankshaft Wear Ring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
Flywheel Inspection and Resurfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
AUXILIARY SHAFT AND CAMSHAFT BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . .168
Auxiliary Shaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
Camshaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
CONNECTING ROD AND PISTON BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Connecting Rod Inspection and Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Piston Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
Piston Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Assembling Connecting Rod to Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
CYLINDER HEAD OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Special Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Inlet and Exhaust Valve Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Cylinder Head Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185
Fire Ring Groove Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Valve Guide Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188
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Valve Seat Insert Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191
Valve Spring Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196
Injection Nozzle Holder Insert Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
Valve Yoke Guide Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Cylinder Head Cup Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199
Cylinder Head Pipe Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200
Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202
VALVE ROCKER ARM SHAFT BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Rocker Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Valve Rocker Arm Shaft Disassembly (without/with Engine Brake) . . . . . . . . . . . . . . . . . . . . .206
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Valve Rocker Arm Shaft Reassembly (without Engine Brake) . . . . . . . . . . . . . . . . . . . . . . . . .207
Valve Rocker Arm Shaft Reassembly (with J-Tech™ Engine Brake) . . . . . . . . . . . . . . . . . . .209
LUBRICATION SYSTEM BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211
Oil Cooler Assembly Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211
Oil Pump Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211
COOLING SYSTEM COMPONENTS BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . .215
Oil Cooler Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
Water Pump Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218
FUEL SYSTEM COMPONENTS BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
Electronic Unit Pump (EUP) Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
Installation of Electronic Unit Pump Plunger Spring and Seat . . . . . . . . . . . . . . . . . . . . . . . . .219
Fuel Injector Nozzle Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221
ENGINE REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .222
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222
Crankshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222
Main Bearing Cap Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224
Piston and Connecting Rod Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230
Flywheel Housing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234
Crankshaft Rear Oil Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238
Flywheel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
Valve Lifter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
Camshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
Camshaft Core Plug Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243
Camshaft Idler Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244
Auxiliary Shaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
Oil Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246
Front Cover Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247
Crankshaft Front Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248
Crankshaft Hub Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Vibration Damper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Oil Pan Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
Cylinder Head Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .252
Exhaust Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255
Nozzle Holder Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257
Push Rod Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259
Valve Yoke Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260
Rocker Arm and Engine Brake Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261
Valve Cover and Spacer Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264
Oil Fill Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .265
Engine ECU/Cooling Plate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266
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Air Compressor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
Electronic Unit Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268
Engine Wiring Harness Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269
Fuel Nozzle Inlet Tube Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269
Turbocharger Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Water Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Oil Cooler and Oil Filter Mounting Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272
Coolant Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Air Inlet Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276
Thermostat, Housing and Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276
Coolant Conditioner Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Fuel Filter Adapter Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278
Engine ECU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Oil Cooler-to-Water Pump Inlet Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Alternator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281
Removing Engine from Engine Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281
Plate-Type Oil Cooler and Oil Filter Mounting Bracket Assembly Installation . . . . . . . . . . . . .282
ENGINE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Engine Installation into Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284
IN-CHASSIS PART/COMPONENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Electronic Unit Pump (EUP) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286
Camshaft Replacement (Engine in Chassis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288
Engine Brake Control Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Valve Lifter H-Ring Installation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
ENGINE SETUP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
Fuel Injection Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
Valve Yoke, Valve Lash and Engine Brake Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Engine Speed and Position Sensors Installation and Adjustment . . . . . . . . . . . . . . . . . . . . . . 304
Electronic Unit Pump (EUP) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .305
ENGINE FINAL PREPARATION AND OPERATIONAL CHECK . . . . . . . . . . . . . . . . . . . . . . . . .306
Filter Element Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306
Engine Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306
Turbocharger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307
Engine Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307
REBUILT ENGINE RUN-IN PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .308
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Run-In Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .309
E-TECH™ ENGINE MECHANICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Material and Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311
E-Tech™ Component Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
SPECIFICATION FOOTNOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328
E-TECH™ ENGINE LUBRICANT AND SEALANT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . .329
FASTENER TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .330
Fastener Selection and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .330
Fastener Sizes and Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
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TABLE OF CONTENTS
ix
SCHEMATICS & DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333
ENGINE SYSTEM SCHEMATICS (FLUIDS FLOW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334
Cooling System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334
Lubrication System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .335
Fuel System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .336
SPECIAL TOOLS & EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .337
E-TECH™ ENGINE SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .338
Special Tools for Engine Overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .338
V-MAC III Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .343
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Page 2
INTRODUCTION
SAFETY INFORMATION
Advisory Labels
Cautionary
signal words
(Danger-Warning-Caution) may appear in various locations throughout this
manual. Information accented by one of these signal words must be observed to minimize the risk of
personal injury to service personnel, or the possibility of improper service methods which may damage
the vehicle or cause it to be unsafe. Additional Notes and Service Hints are used to emphasize areas of
procedural importance and provide suggestions for ease of repair. The following definitions indicate the
use of these advisory labels as they appear throughout the manual:
Activities associated with
Danger
indicate that death or serious personal
injury may result from failing to heed the advisory. Serious personal injury
may be equated to career-ending injury.
Activities associated with
Warning
indicate that personal injury may result
from failing to heed the advisory. In this case, personal injury is not equated to
career-ending injury, but results in possible change in quality of life.
Activities associated with Caution indicate that product damage may result from
failing to heed the advisory. Caution is not used for personal injury.
A procedure, practice, or condition that is essential to emphasize.
A helpful suggestion that will make it quicker and/or easier to perform a procedure,
while possibly reducing service cost.
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INTRODUCTION
Page 3
Service Procedures and Tool Usage
Anyone using a service procedure or tool not recommended in this manual must first satisfy himself
thoroughly that neither his safety nor vehicle safety will be jeopardized by the service method he selects.
Individuals deviating in any manner from the instructions provided assume all risks of consequential
personal injury or damage to equipment involved.
Also note that particular service procedures may require the use of a special tool(s) designed for a
specific purpose. These special tools must be used in the manner described, whenever specified in the
instructions.
1. Before starting a vehicle, always be seated in the driver’s seat, place the
transmission in neutral, be sure that parking brakes are set, and
disengage the clutch.
2. Before working on a vehicle, place the transmission in neutral, set the
parking brakes, and block the wheels.
3. Before towing the vehicle, place the transmission in neutral and lift the
rear wheels off the ground, or disconnect the driveline to avoid damage to
the transmission during towing.
Engine-driven components such as Power Take-Off (PTO) units, fans and fan
belts, driveshafts and other related rotating assemblies, can be very
dangerous. Do not work on or service engine-driven components unless the
engine is shut down. Always keep body parts and loose clothing out of range
of these powerful components to prevent serious personal injury. Be aware of
PTO engagement or nonengagement status. Always disengage the PTO when
not in use.
REMEMBER,
SAFETY . . . IS NO ACCIDENT!
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Page 4
INTRODUCTION
Mack Trucks, Inc. cannot anticipate every
possible occurrence that may involve a potential
hazard. Accidents can be avoided by recognizing
potentially hazardous situations and taking
necessary precautions. Performing service
procedurescorrectly is critical to technician safety
and safe, reliable vehicle operation.
The following list of general shop safety practices
can help technicians avoid potentially hazardous
situations and reduce the risk of personal injury.
DO NOT perform any services, maintenance
procedures or lubrications until this manual has
been read and understood.
rPerform all service work on a flat, level
surface. Block wheels to prevent vehicle
from rolling.
rDO NOT wear loose-fitting or torn clothing.
Remove any jewelry before servicing
vehicle.
rALWAYS wear safety glasses and protective
shoes. Avoid injury by being aware of sharp
corners and jagged edges.
rUse hoists or jacks to lift or move heavy
objects.
rNEVER run engine indoors unless exhaust
fumes are adequately vented to the outside.
rBe aware of hot surfaces. Allow engine to
cool sufficiently before performing any
service or tests in the vicinity of the engine.
rKeep work area clean and orderly. Clean up
any spilled oil, grease, fuel, hydraulic fluid,
etc.
rOnly use tools that are in good condition,
and always use accurately calibrated torque
wrenches to tighten all fasteners to specified
torques. In instances where procedures
require the use of special tools which are
designed for a specific purpose, use only in
the manner described in the instructions.
rDo not store natural gas powered vehicles
indoors for an extended period of time
(overnight) without first removing the fuel.
rNever smoke around a natural gas powered
vehicle.
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